<template>
    <div class="list" ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">{{this.currentCity}}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper"
                    v-for="item of hot"
                    :key="item.id"
                    @click="handleCityClick(item.name)"
                    >
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div class="area"
            v-for="(item,key) of cities"
            :key="key"
            :ref="key"
            >
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list">
                    <div class="item border-bottom"
                    v-for="value of item"
                    :key="value.id"
                    @click="handleCityClick(value.name)"
                    >
                      {{value.name}}
                    </div>
                </div>
            </div>
        </div>
    </div>
</template>
<script>
import Bscroll from 'better-scroll'
import {mapState, mapMutations} from 'vuex'

export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  },
  methods: {
    handleCityClick (city) {
    //   this.$store.commit('changeCity', city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter (newLetter) {
      const element = this.$refs[newLetter][0]
      this.scroll.scrollToElement(element)
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}
</script>
<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .border-topbottom
    &:before
        border-color: #ccc
    &:after
        border-color: #ccc
  .border-bottom
    &:before
        border-color: #ccc
.list
  position: absolute
  overflow: hidden
  top: 1.58rem
  left: 0
  right: 0
  bottom: 0
  .title
    line-height: .54rem
    background: #eee
    padding-left: .2rem
    color: #666
    font-size: .26rem
  .button-list
    padding: .1rem .6rem .1rem .2rem
    overflow: hidden
    .button-wrapper
        float: left
        width: 33.33%
        .button
            margin: .1rem
            padding: .1rem 0
            text-align: center
            border: .02rem solid #ccc
            border-radius: .06rem
   .item-list
     .item
        line-height: .76rem
        padding-left: .2rem
</style>
